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Biology
WAEC / WASSCE 2021
Science of Living Things
Solution
Radius and ulna are bones of the?
A
pectoral girdle
B
upper arm
C
pelvic girdle
D
lower arm
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
Our forearm contains two long, parallel bones: the ulna and the radius. The ulna is the longer and larger of the two bones, residing on the medial (pinky finger) side of the forearm.
Source: Myschool Past Questions Archive (Record #62362)
Biology
WAEC / WASSCE 2021
Science of Living Things
Solution
The blood vessel which carries blood from the alimentary canal to the liver is the?
A
hepatic artery
B
hepatic vein
C
hepatic portal vein
D
mesenteric artery
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The portal vein or hepatic portal vein (HPV) is a blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas and spleen to the liver. This blood contains nutrients and toxins extracted from digested contents.
Source: Myschool Past Questions Archive (Record #62363)
Biology
WAEC / WASSCE 2021
Science of Living Things
Diagram
The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.
Which of the labeled parts is the cortex?
Attached Figure / Diagram
A
I
B
II
C
III
D
IV
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #62366)
Biology
WAEC / WASSCE 2021
Science of Living Things
Diagram
The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.
What is the main function of the organ?
Attached Figure / Diagram
A
Excretion
B
Respiration
C
Reproduction
D
Locomotion
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #62367)
Biology
WAEC / WASSCE 2021
Science of Living Things
Detoxification of urea takes place in the?
A
pancreas
B
heart
C
liver
D
testes
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #62368)
Biology
WAEC / WASSCE 2021
Science of Living Things
Which of the following hormones is suddenly secreted into the bloodstream of a frightened person?
A
insulin
B
adrenaline
C
thyroxine
D
parathormore
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #62369)
Biology
WAEC / WASSCE 2021
Science of Living Things
The temperature control centre in mammals is located in the?
A
skin
B
hypothalamus
C
pituitary gland
D
adrenal gland
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #62370)
Biology
WAEC / WASSCE 2021
Science of Living Things
Diagram
Solution
The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.
The eye defect illustrated in the diagram is?
Attached Figure / Diagram
A
hypermetropia
B
astigmatism
C
presbyopia
D
myopia
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
Myopia occurs when the shape of your eye causes light rays to bend (refract) incorrectly, focusing images in front of your retina instead of on your retina.
Source: Myschool Past Questions Archive (Record #62371)
Biology
WAEC / WASSCE 2021
Science of Living Things
Diagram
Solution
The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.
The eye defect can be corrected by the use of?
Attached Figure / Diagram
A
convex lens
B
concave lens
C
bifocal lens
D
cylindrical lens
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
Nearsightedness (myopia) is corrected with lenses called “minus power lenses.”
They are concave-shaped and help the eyes focus light properly. Myopia causes a person to see distant objects as blurry.
Source: Myschool Past Questions Archive (Record #62372)
Biology
WAEC / WASSCE 2021
Science of Living Things
Which of the following factors is not necessary for photosynthesis?
A
water
B
carbon (IV) oxide
C
wind
D
sunlight
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #62378)
Biology
WAEC / WASSCE 2021
Science of Living Things
Autotrophic nutrition is a process whereby an organism obtains food
A
by utilizing its store energy
B
by synthesizing simple substances using energy
C
from other organisms in exchange for some products
D
in a synthesized form, from other living organisms
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #62379)
Biology
WAEC / WASSCE 2021
Science of Living Things
Solution
The process that takes place at the light stage of photosynthesis is?
A
splitting of water molecules to form hydrogen ions
B
reduction of carbon (IV) oxide to form carbohydrate
C
formation of two molecules of phosphoglyceric acid
D
breaking down of ATP molecules to produce energy
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
one of the processes that take place in the light-dependent stage of photosynthesis is the photolysis of water, i.e. the splitting of water molecules.
Source: Myschool Past Questions Archive (Record #62380)
Biology
WAEC / WASSCE 2021
Science of Living Things
Diagram
The diagram above is an illustration of the foot of an animal.
The adaptation of this type of foot is that it is?
Attached Figure / Diagram
A
used as a bait to catch fish in water
B
used as a paddle for swimming
C
effective in scratching the soil for food
D
used for killing prey in water
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #62381)
Biology
WAEC / WASSCE 2021
Science of Living Things
The following organisms are examples of carnivorous plants except.
A
gloriosa
B
venus flytrap
C
pitcher plant
D
Utricularia
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #62382)
Biology
WAEC / WASSCE 2021
Science of Living Things
How many gametes are produced in the pollen grain of a flowering plant before fertilization?
A
one
B
two
C
three
D
four
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #62373)